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Coral reefs

Coral reefs are structures formed from the calcium carbonate secretions of corals. They are colonies of tiny animals in marine areas containing few nutrients.

Contributors in Coral reefs

Coral reefs

Ecosystem

Natural environment; Coral reefs

An ecological community considered together with the non-living factors of its environment as a unit.

Ancestor

Natural environment; Coral reefs

Any organism, population, or species from which some other organism, population, or species is descended.

Equinox

Natural environment; Coral reefs

Either of the two times during a year when the sun crosses the celestial equator and the length of day and night are equal.

Ostium

Natural environment; Coral reefs

In sponges, a microscopic pore through which water enters the sponge body.

Parts per thousand (ppt)

Natural environment; Coral reefs

Number of parts of a substance found in one thousand parts of a particular gas, liquid, or solid.

Autotrophic

Natural environment; Coral reefs

Relating to organisms that have a type of nutrition in which organic compounds used in metabolism are obtained by synthesis from inorganic compounds.

Chlorophyll b

Natural environment; Coral reefs

The chlorophyll generally characteristic of higher plants and green algae.It is absent in other types of algae.

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